AT-OMNI-121 / AT-OMNI-122
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Both the AT-OMNI-121 and AT-OMNI-122 provide RS-232 over IP, allowing communication between an automation
system and an RS-232 device. This step is optional. Note that different Phoenix connectors are provided with each
product.
1.
Use wire strippers to remove a portion of the cable jacket.
2.
Remove at least 3/16” (5 mm) from the insulation of the RX, TX, and GND wires.
3.
Insert the TX, RX, and GND wires into correct terminal on the included Phoenix block. If using non-tinned
stranded wire, press the orange tab, above the terminal, while inserting the exposed wire. Repeat this step for
the TX, RX, and GND connections.
RS-232 Connections
NOTE:
Typical DB9 connectors use pin 2 for TX, pin 3 for RX, and pin 5 for ground. On some
devices, pins 2 and 3 are reversed.
GND
RX
TX
Push tab
to unlock
GND
RX
TX
AT-OMNI-121
AT-OMNI-122
Installation